Master carrier for magnetic transfer, magnetic transfer...

Details Master carrier for magnetic transfer, magnetic transfer... Master carrier for magnetic transfer, magnetic transfer...

2005-03-11

2009-08-11

Bernatz, Kevin M. (Department: 1794)

Dynamic magnetic information storage or retrieval

Record copying

Contact transfer

C428S835200

Reexamination Certificate

active

07573663

ABSTRACT:
A master for magnetic transfer is provided that obtains favorable close contact with a slave medium, is capable of good positioning therewith, and prevents positional misalignment, damage, and separation failures. The master carrier is formed to have surface properties such that a frictional characteristic value F/P·A is within a range from 173 to 24/cm2, and preferably within a range from 112 to 45/cm2, when the master carrier and the slave medium are placed in uniform close contact with a contact area A, a vertical load P is applied, the master carrier and the slave medium are pulled in their planar directions, and the maximum static friction at this time is designated as F. It is also preferable that a hard protective layer of DLC film is formed on the surface of the master carrier, and that a lubricant is provided on the hard protective layer, as necessary.

REFERENCES:
patent: 5690838 (1997-11-01), Moriguchi et al.
patent: 6636371 (2003-10-01), Komatsu et al.
patent: 2002/0141088 (2002-10-01), Nishikawa et al.
patent: 2003/0099416 (2003-05-01), Kinno et al.
patent: 2003/0152808 (2003-08-01), Noguchi et al.
patent: 10-275435 (1998-10-01), None
patent: 2002-251722 (2002-09-01), None
patent: 2003-178440 (2003-06-01), None
WO 99/33918 Kobayashi (PCT/US/98/27428).
Translation JP 2003-178440 (JP document publication date Jun. 27, 2003).
Translation JP 2002-251722 (JP document publication date Sep. 6, 2002).
Translation JP 10-275435 (JP document publication date Oct. 13, 1998).

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